package com.example.demo;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User:DELL
 * Time:23:07
 */
public class text1 {
    public TreeNode pruneTree(TreeNode root){
        if(root==null){
            return null;
        }
        root.left=pruneTree(root.left);
        root.right=pruneTree(root.right);
        if(root.left==null&&root.right==null&&root.val==0){
            root=null;
        }
        return root;
    }
}
